MiStar Unit 7.2 Review: Volcanoes!

The Ring of Fire is a region of change that borders

The movement of two tectonic plates away from each other

The force that causes the cycling of matter

Type of rock associated with diverging plate boundaries and fissure vent/shield volcanoes is

When hot spots form under continental plates, they produce mostly light-colored rocks called

Frequency is calculated by dividing the total amount of time a series of events occurred by the

Type of rock associated with converging plate boundaries and stratovolcanoes is

Over millions of years, plate motion has drastically shifted the positions of Earths continents

The flow of energy from the interior of the Earth causes which processes to occur?

The region beneath the crust where the mantle plume transfers thermal energy to the crust

Energy from the mantle moving towards the crust and escaping on Earth’s surface.

a steep-sided, often cone-shaped volcanic peak

Melting occurs

Scientific models are always drawn to scale.

Volcanologists use models that exaggerate components/interactions underneath Earth's surface

Crystallization occurs at

When energy flows out of a liquid, it decreases the temperature of the liquid so it can

The tectonic process in which one tectonic plate goes under another is called

Dark volcanic rocks are usually only from melting ocean materials. This rock type is called

How often or rarely an event occurs is called

Seafloor spreading occurs at

A tectonic plate in which most of the crust the top rock layer is mostly land.

The type of volcano commonly associated with diverging plate boundaries is

to change a liquid material into a solid by removing or releasing thermal energy.

The type of volcano commonly associated with converging plate boundaries is

the hardened rock that forms as a result of crystallization

Because Kilauea is in an isolated location in the middle of an ocean basin it is in a region of

the denser tectonic plate that usually subducts underneath the less dense plate.

Volcanoes can only be found at tectonic plate boundaries

The solid surface of the Earth (including the seafloor beneath the oceans).

Lava is erupted when energy flows from the mantle to the crust causing the plate material to

Big eruptions occur __________ than smaller eruptions.

The movement of two tectonic plates toward each other

The amount of tephra ejected during an eruption is measured by

Most volcanoes are found along tectonic plate boundaries

the movement of material from the mantle and the crust upwards, emitting on Earth’s surface

melted rock that is emitted from a volcano and flows onto the surface

Linear volcano patterns are created by both divergent and convergent boundaries.

New plate material is created at

a vent or opening on a volcano that releases high temperature steam and gases

Plate material melts and becomes magma. When enough magma collects in the crust it's called a

Because of the long linear pattern of volcanic activity, Mount St. Helen's is in a region of

A quantitative scale of explosivity is

Area on Earth’s surface with high thermal energy flow, and/or linear patterns of activity

Volcanoes that form by hot spot volcanism can only occur in the ocean.

This is used to describe eruption size based on the volume of material erupted by a volcano.

a volcanic crater, formed by collapse of the volcano summit as the result of a major eruption

Old plate material is destroyed at

a linear volcanic vent(s) through which lava/gases erupt, usually without explosive activity.

Area on Earth’s surface with little thermal energy flow, away from linear patterns of activity

A common feature found at diverging plate boundaries

upward flow of hot material within the mantle causing melting of the overlying plate.

The theory that the earth's crust is made of about a dozen tectonic plates that move is

Tectonic plates move

The semi-solid, thick, very hot layer beneath the crust.

Volcanoes are created because the __________ causes the flow of matter which creates volcanoes.